Checking if a string contains substring in JavaScript
In this post we will give you information about Checking if a string contains substring in JavaScript. Hear we will give you detail about Checking if a string contains substring in JavaScriptAnd how to use it also give you demo for it if it is necessary.
we are going to learn about how to check if a string contains another substring or not in JavaScript
Using includes method
To check if a string contains substring, we can use the built-in includes() method in JavaScript.
let string = "how are you";let substring = "you";console.log(string.includes(substring)); // true
The includes() method returns true if a substring is found; else it returns false.
Similarly, we can also use the indexOf() method, where it returns -1 if a string doesn’t contain a substring; else it returns the index of the substring.
Example:
let string = "how are you";let substring = "you";console.log(string.indexOf(substring) !== -1); // trueconsole.log(string.indexOf('fun') !== -1); // falseHope this code and post will helped you for implement Checking if a string contains substring in JavaScript. if you need any help or any feedback give it in comment section or you have good idea about this post you can give it comment section. Your comment will help us for help you more and improve us. we will give you this type of more interesting post in featured also so, For more interesting post and code Keep reading our blogs